#!/usr/local/bin/php -f
<?php
/*
	rc.filter_synchronize
	Copyright (C) 2004-2006 Scott Ullrich
	Copyright (C) 2005              Bill Marquette
	Copyright (C) 2006              Peter Allgeyer
	Copyright (C) 2008              Ermal Luci
	All rights reserved.

	originally part of m0n0wall (http://m0n0.ch/wall)
	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
	All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:

	1. Redistributions of source code must retain the above copyright notice,
	   this list of conditions and the following disclaimer.

	2. Redistributions in binary form must reproduce the above copyright
	   notice, this list of conditions and the following disclaimer in the
	   documentation and/or other materials provided with the distribution.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	POSSIBILITY OF SUCH DAMAGE.

*/

require_once("globals.inc");
require_once("config.inc");
require_once("functions.inc");
require_once("filter.inc");
require_once("shaper.inc");
require_once("xmlrpc.inc");
require_once("interfaces.inc");

/*
 *  backup_vip_config_section($section): returns as an xml file string of
 *                                   the configuration section
 */
function backup_vip_config_section() {
	global $config;

	if (!is_array($config['virtualip']['vip']))
		return;
	$temp = array();
	$temp['vip'] = array();
	foreach($config['virtualip']['vip'] as $section) {
		if (($section['mode'] == 'proxyarp' || $section['mode'] == 'ipalias') &&
		    (strpos($section['interface'], '_vip') === FALSE) &&
		    (strpos($section['interface'], 'lo0') === FALSE))
			continue;
		if ($section['advskew'] <> "") {
			$section_val = intval($section['advskew']);
			$section_val=$section_val+100;
			if ($section_val > 254)
				$section_val = 254;
			$section['advskew'] = $section_val;
		}
		if ($section['advbase'] <> "") {
			$section_val = intval($section['advbase']);
			if ($section_val > 254)
				$section_val = 254;
			$section['advbase'] = $section_val;
		}
		$temp['vip'][] = $section;
	}
	return $temp;
}

function remove_special_characters($string) {
	$match_array = "";
	preg_match_all("/[a-zA-Z0-9\_\-]+/",$string,$match_array);
	$string = "";
	foreach ($match_array[0] as $ma) {
		if ($string <> "")
			$string .= " ";
		$string .= $ma;
	}
	return $string;
}

function carp_check_version($url, $username, $password, $port = 80, $method = 'pfsense.host_firmware_version') {
	global $config, $g;

	if(file_exists("{$g['varrun_path']}/booting") || platform_booting())
		return;

	$params = array(
		XML_RPC_encode($password)
	);

	$numberofruns = 0;
	while ($numberofruns < 2) {
		$msg = new XML_RPC_Message($method, $params);
		$cli = new XML_RPC_Client('/xmlrpc.php', $url, $port);
		$cli->setCredentials($username, $password);
		if($numberofruns > 0)
			$cli->setDebug(1);
		/* send our XMLRPC message and timeout after 240 seconds */
		$resp = $cli->send($msg, "240");
		if(!is_object($resp)) {
			$error = "A communications error occurred while attempting XMLRPC sync with username {$username} {$url}:{$port}.";
		} elseif($resp->faultCode()) {
			$error = "An error code was received while attempting XMLRPC sync with username {$username} {$url}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
		} else {
			$parsed_response =  XML_RPC_decode($resp->value());
			if(!is_array($parsed_response)) {
				if (trim($parsed_response) == "Authentication failed") {
					$error = "An authentication failure occurred while trying to access {$url}:{$port} ({$method}).";
					log_error($error);
					file_notice("sync_settings", $error, "Settings Sync", "");
					return false;
				}
			} else {
				if (!isset($parsed_response['config_version']) ||
				  $parsed_response['config_version'] < $config['version']) {
					update_filter_reload_status("The other member is on older configuration version of {$g['product_name']}. Sync will not be done to prevent problems!");
					log_error("The other member is on older configuration version of {$g['product_name']}. Sync will not be done to prevent problems!");
					return false;
				} else
					return true;
			}
		}
		log_error($error);
		file_notice("sync_settings", $error, "Settings Sync", "");
		$numberofruns++;
	}

	return false;
}

function carp_sync_xml($url, $username, $password, $sections, $port = 80, $method = 'pfsense.restore_config_section') {
	global $config, $g;

	if(file_exists("{$g['varrun_path']}/booting") || platform_booting())
		return;

	update_filter_reload_status("Syncing CARP data to {$url}");

	/* make a copy of config */
	$config_copy = $config;

	/* strip out nosync items */
	if (is_array($config_copy['nat']['outbound']['rule'])) {
		$rulescnt = count($config_copy['nat']['outbound']['rule']);
		for ($x = 0; $x < $rulescnt; $x++) {
			$config_copy['nat']['outbound']['rule'][$x]['descr'] = remove_special_characters($config_copy['nat']['outbound']['rule'][$x]['descr']);
			if (isset ($config_copy['nat']['outbound']['rule'][$x]['nosync']))
				unset ($config_copy['nat']['outbound']['rule'][$x]);
		}
	}
	if (is_array($config_copy['nat']['rule'])) {
		$natcnt = count($config_copy['nat']['rule']);
		for ($x = 0; $x < $natcnt; $x++) {
			$config_copy['nat']['rule'][$x]['descr'] = remove_special_characters($config_copy['nat']['rule'][$x]['descr']);
			if (isset ($config_copy['nat']['rule'][$x]['nosync']))
				unset ($config_copy['nat']['rule'][$x]);
		}
	}
	if (is_array($config_copy['filter']['rule'])) {
		$filtercnt = count($config_copy['filter']['rule']);
		for ($x = 0; $x < $filtercnt; $x++) {
			$config_copy['filter']['rule'][$x]['descr'] = remove_special_characters($config_copy['filter']['rule'][$x]['descr']);
			if (isset ($config_copy['filter']['rule'][$x]['nosync']))
				unset ($config_copy['filter']['rule'][$x]);
		}
	}
	if (is_array($config_copy['aliases']['alias'])) {
		$aliascnt = count($config_copy['aliases']['alias']);
		for ($x = 0; $x < $aliascnt; $x++) {
			$config_copy['aliases']['alias'][$x]['descr'] = remove_special_characters($config_copy['aliases']['alias'][$x]['descr']);
			if (isset ($config_copy['aliases']['alias'][$x]['nosync']))
				unset ($config_copy['aliases']['alias'][$x]);
		}
	}
	if (is_array($config_copy['dnsmasq']['hosts'])) {
		$dnscnt = count($config_copy['dnsmasq']['hosts']);
		for ($x = 0; $x < $dnscnt; $x++) {
			$config_copy['dnsmasq']['hosts'][$x]['descr'] = remove_special_characters($config_copy['dnsmasq']['hosts'][$x]['descr']);
			if (isset ($config_copy['dnsmasq']['hosts'][$x]['nosync']))
				unset ($config_copy['dnsmasq']['hosts'][$x]);
		}
	}
	if (is_array($config_copy['ipsec']['tunnel'])) {
		$ipseccnt = count($config_copy['ipsec']['tunnel']);
		for ($x = 0; $x < $ipseccnt; $x++) {
			$config_copy['ipsec']['tunnel'][$x]['descr'] = remove_special_characters($config_copy['ipsec']['tunnel'][$x]['descr']);
			if (isset ($config_copy['ipsec']['tunnel'][$x]['nosync']))
				unset ($config_copy['ipsec']['tunnel'][$x]);
		}
	}

	if (is_array($config_copy['dhcpd'])) {
		foreach($config_copy['dhcpd'] as $dhcpif => $dhcpifconf) {
			if($dhcpifconf['failover_peerip'] <> "") {
				$int = guess_interface_from_ip($dhcpifconf['failover_peerip']);
				$intip = find_interface_ip($int);
				$config_copy['dhcpd'][$dhcpif]['failover_peerip'] = $intip;
			}
		}
	}

	foreach ($sections as $section) {
	   /*  we can't use array_intersect_key()
		*  due to the vip 'special case'
		*/
		switch ($section) {
			case 'virtualip':
				$xml[$section] = backup_vip_config_section();
				break;
			case 'user':
				$xml['system'][$section] = $config_copy['system'][$section];
				$xml['system']['nextuid'] = $config_copy['system']['nextuid'];
				break;
			case 'group':
				$xml['system'][$section] = $config_copy['system'][$section];
				$xml['system']['nextgid'] = $config_copy['system']['nextgid'];
				break;
			case 'authserver':
				$xml['system'][$section] = $config_copy['system'][$section];
			default:
				$xml[$section] = $config_copy[$section];
		}
	}

	$params = array(
		XML_RPC_encode($password),
		XML_RPC_encode($xml)
	);

	$numberofruns = 0;
	while ($numberofruns < 2) {
		log_error("Beginning XMLRPC sync to {$url}:{$port}.");
		$msg = new XML_RPC_Message($method, $params);
		$cli = new XML_RPC_Client('/xmlrpc.php', $url, $port);
		$cli->setCredentials($username, $password);
		if($numberofruns > 0)
			$cli->setDebug(1);
		/* send our XMLRPC message and timeout after 240 seconds */
		$resp = $cli->send($msg, "240");
		if(!is_object($resp)) {
			$error = "A communications error occurred while attempting XMLRPC sync with username {$username} {$url}:{$port}.";
			log_error($error);
			file_notice("sync_settings", $error, "Settings Sync", "");
		} elseif($resp->faultCode()) {
			$error = "An error code was received while attempting XMLRPC sync with username {$username} {$url}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
			log_error($error);
			file_notice("sync_settings", $error, "Settings Sync", "");
		} else {
			$parsed_response =  XML_RPC_decode($resp->value());
			if(!is_array($parsed_response) && trim($parsed_response) == "Authentication failed") {
				$error = "An authentication failure occurred while trying to access {$url}:{$port} ($method).";
				log_error($error);
				file_notice("sync_settings", $error, "Settings Sync", "");
				return -1;
			} else {
				log_error("XMLRPC sync successfully completed with {$url}:{$port}.");
				update_filter_reload_status("XMLRPC sync successfully completed with {$url}:{$port}.");
			}
			$numberofruns = 3;
		}
		$numberofruns++;
	}
}

if (platform_booting())
	return;

if (is_array($config['hasync'])) {
	update_filter_reload_status("Building high availability sync information");
	$hasync = $config['hasync'];

	if (empty($hasync['synchronizetoip'])) {
		/* this gets hit on every filter sync on the secondary, a log here creates a lot of log spam and I never saw it actually log anything useful */
		return;
	}

	/*
	* XXX: The way we're finding the port right now is really suboptimal -
	*     we can't assume that the other machine is setup identically.
	*/
	if (!empty($config['system']['webgui']['protocol'])) {
		$synchronizetoip = $config['system']['webgui']['protocol'];
		$synchronizetoip .= "://";
	}

	/* if port is empty lets rely on the protocol selection */
	$port = $config['system']['webgui']['port'];
	if (empty($port)) {
		if ($config['system']['webgui']['protocol'] == "http")
			$port = "80";
		else
			$port = "443";
	}

	if(is_ipaddrv6($hasync['synchronizetoip']))
		$hasync['synchronizetoip'] = "[{$hasync['synchronizetoip']}]";
	$synchronizetoip .= $hasync['synchronizetoip'];
	if ($hasync['synchronizerules'] != "") {
		if (!is_array($config['filter']))
			$config['filter'] = array();
		$sections[] = 'filter';
	}
	if ($hasync['synchronizenat'] != "") {
		if (!is_array($config['nat']))
			$config['nat'] = array();
		$sections[] = 'nat';
	}
	if ($hasync['synchronizealiases'] != "") {
		if (!is_array($config['aliases']))
			$config['aliases'] = array();
		$sections[] = 'aliases';
	}
	if ($hasync['synchronizedhcpd'] != "" and is_array($config['dhcpd']))
		$sections[] = 'dhcpd';
	if ($hasync['synchronizewol'] != "") {
		if (!is_array($config['wol']))
			$config['wol'] = array();
		$sections[] = 'wol';
	}
	if ($hasync['synchronizetrafficshaper'] != "" and is_array($config['shaper']))
		$sections[] = 'shaper';
	if ($hasync['synchronizetrafficshaperlimiter'] != "" and is_array($config['dnshaper']))
		$sections[] = 'dnshaper';
	if ($hasync['synchronizetrafficshaperlayer7'] != "" and is_array($config['l7shaper']))
		$sections[] = 'l7shaper';
	if ($hasync['synchronizestaticroutes'] != "") {
		if (!is_array($config['staticroutes']))
			$config['staticroutes'] = array();
		if (!is_array($config['staticroutes']['route']))
			$config['staticroutes']['route'] = array();
		$sections[] = 'staticroutes';
		if (!is_array($config['gateways']))
			$config['gateways'] = array();
		$sections[] = 'gateways';
	}
	if ($hasync['synchronizevirtualip'] != "") {
		if (!is_array($config['virtualip']))
			$config['virtualip'] = array();
		$sections[] = 'virtualip';
	}
	if ($hasync['synchronizelb'] != "") {
		if (!is_array($config['load_balancer']))
			$config['load_balancer'] = array();
		$sections[] = 'load_balancer';
	}
	if ($hasync['synchronizeipsec'] != "") {
		if (!is_array($config['ipsec']))
			$config['ipsec'] = array();
		$sections[] = 'ipsec';
	}
	if ($hasync['synchronizeopenvpn'] != "") {
		if (!is_array($config['openvpn']))
			$config['openvpn'] = array();
		$sections[] = 'openvpn';
	}
	if ($hasync['synchronizecerts'] != "" || $hasync['synchronizeopenvpn'] != "") {
		if (!is_array($config['cert']))
			$config['cert'] = array();
		$sections[] = 'cert';

		if (!is_array($config['ca']))
			$config['ca'] = array();
		$sections[] = 'ca';

		if (!is_array($config['crl']))
			$config['crl'] = array();
		$sections[] = 'crl';
	}
	if ($hasync['synchronizeusers'] != "") {
		$sections[] = 'user';
		$sections[] = 'group';
	} 
	if ($hasync['synchronizeauthservers'] != "") {
		$sections[] = 'authserver';
	}
	if ($hasync['synchronizednsforwarder'] != "") {
		if (is_array($config['dnsmasq']))
			$sections[] = 'dnsmasq';
		if (is_array($config['unbound']))
			$sections[] = 'unbound';
	}
	if ($hasync['synchronizeschedules'] != "" || $hasync['synchronizerules'] != "") {
		if (!is_array($config['schedules']))
			$config['schedules'] = array();
		$sections[] = 'schedules';
	}
	if ($hasync['synchronizecaptiveportal'] != "" and is_array($config['captiveportal']))
		$sections[] = 'captiveportal';
	if ($hasync['synchronizecaptiveportal'] != "" and is_array($config['vouchers']))
		$sections[] = 'vouchers';

	if (count($sections) <= 0) {
		log_error("Nothing has been configured to be synched. Skipping....");
		return;
	}

	if (empty($hasync['username']))
		$username = "admin";
	else
		$username = $hasync['username'];

	if (!carp_check_version($synchronizetoip, $username, $hasync['password'], $port))
		return;

	update_filter_reload_status("Signaling CARP reload signal...");
	if (carp_sync_xml($synchronizetoip, $username, $hasync['password'], $sections, $port) == -1)
		return;
	$cli = new XML_RPC_Client('/xmlrpc.php', $synchronizetoip, $port);
	$params = array(
	  XML_RPC_encode($hasync['password'])
	);

	$msg = new XML_RPC_Message('pfsense.filter_configure', $params);
	$cli->setCredentials($username, $hasync['password']);
	$resp = $cli->send($msg, "900");

	if (!is_object($resp)) {
		$error = "A communications error occurred while attempting Filter sync with username {$username} {$synchronizetoip}:{$port}.";
		log_error($error);
		file_notice("sync_settings", $error, "Settings Sync", "");
	} elseif($resp->faultCode()) {
		$error = "An error code was received while attempting Filter sync with username {$username} {$synchronizetoip}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
		log_error($error);
		file_notice("sync_settings", $error, "Settings Sync", "");
	} else {
		log_error("Filter sync successfully completed with {$synchronizetoip}:{$port}.");
		$numberofruns = 3;
	}
}

?>
